staging.bbclass: mangle *.la for ${base_libdir} too

currently staging.bbclass mangle *.la to ensure sysroot prefix attached to
dependency_libs if other *.la is referenced, however it only happens on
${libdir}. libpam is special with its libraries under ${base_libdir}. So
this extends mangle to ${base_libdir} too

Signed-off-by: Kevin Tian <kevin.tian@intel.com>

meta/classes/staging.bbclass

@@ -35,6 +35,7 @@ sysroot_stage_libdir() {
 		sed -e 's/^installed=yes$/installed=no/' \
 		    -e '/^dependency_libs=/s,${WORKDIR}[[:alnum:]/\._+-]*/\([[:alnum:]\._+-]*\),${STAGING_LIBDIR}/\1,g' \
 		    -e "/^dependency_libs=/s,\([[:space:]']\)${libdir},\1${STAGING_LIBDIR},g" \
+		    -e "/^dependency_libs=/s,\([[:space:]']\)${base_libdir},\1${STAGING_DIR_HOST}${base_libdir},g" \
 		    -i $src/$i
 	done
 	sysroot_stage_dir $src $dest